for anyone that uses VSTs..
for mixing guitars and vocals i've been using a free plugin that is awesome(not the only type of eq-ing i do)
check it out:Back Stage EQ ONE http://www.mediafire.com/?4zm2lmcizhm
Intended for those who need to get their mix done fast and clean but want to have a lot of control over the sound, Back Stage EQ ONE packs eight controls for adjusting certain characteristics of the sound such as depth, warmth, body, clarity, presence, brightness, punch, and space. Gentle compression is carefully applied to certain frequencies to help remove some common defects in the sound like too much low-rumble and sibilance. Punch and space are non-EQ controls. Punch increases the attack of the sound, while space applies subtle early reflections to reduce the proximity effect. The 4-band stereo effect switches allow you to select which part of the sound to widen. This is useful when trying to move overlapping frequencies of different tracks (eg. moving the low of the vocals to the sides to make way for the kick drums and bass guitar in the center). There's also a send level control which allows you to adjust how much of the total effect will be applied to the original sound.
It's all about character.
Back Stage EQ ONE can also be used to instantly add flavor to your sound. For those who are not afraid to add that extra 'brilliance' or make the sound 'warm and fuzzy' it can't get easier than this. With this free VST effect you can add character to your vocals or guitar solo's in no time. Tired of thin vocals? Increase the 'depth' or the 'body' a little. Is the sound too painful to the ear? Dial down the 'presence' and the 'warmth'. Is your guitar strumming sounding a little dull? Give it some 'brightness'. Are your backing vocals buried? Add some 'clarity'. Is that drum part sounding lame even though it's loud? Let it pack some 'punch'. If you know what you want in your sound, it's easy to get it right.